Improved wash-boiler



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Letters Patent No. 96,857, dated November 16, 1869.

IMPROVED WASH-BQILER The Schedule referred to in these Letters Patent and making part of the same'.

To all vwhom. it may conce/rn.-

Be it known that I, GEORGE W. WILSON, of Freeport-,in the county of Stephenson, and State of Illinois,

have invented certain Improvements in IVash-Boilers, of` which the following is a specification. I

The nature of my invention consists in constructing a cover f'or a wash-boiler with sides projecting downward to or nearly to the bottom of the boiler; in attachiin:r partitions thereto; and in providing it with a valve, so that when the cover is held in place in the boiler, steam-pressure may be obtained to a certain degree, and a circulation of wat-er be produced without the use of a diaphragm-or false bot-tom.

Description of the Accompanying Drawings.

-Figure l is au isometrical perspective.

Figure 2, a vertical section on red line x J.

General Description..

A represents a boiler made in anyconvenient form, and ofthe usual material.

B, the cover, which is made to fitthe boiler closely, as shown.

At the ends of` this cover, or at the sides, as may be convenient or best aceonnnodate the interior space, I attach the plates or partitions C. l

The sides ot' the cover are made todescelid to the bottom ot' the boiler, or into the water therein,7 and so attached to the top that the cover will be steam or airtight.

The partitions or plates C are so attached that their lower edges will be about the same distance from the bottom of the coveras they are placed from -the sides orends of` the cover. Their upper edges are brought nearly. up to the top of' the cover, soasto leave a small space at the top for the outflow ot' water, or they may be .brought up, and attached to it. In this case a row of holes is made near the. top of` the cover, sufiicicntly large or numerous f'or the outflow.

I provide this cover with locks or catches D, so as to prevent the steam from forcing,- it out of the boiler, or vraising; it so that its lower edge will come above the water. i

\Vhen the cover descends below the top of the boiler, these catches or locks are applied, as shown.

The. cover may, however, project considerably above lthe boiler, if' desired. In that event, hooks or other catches will be required, and also a flange around the boiler, to hold or return any water which may be forced out betweenthe cover and the boiler.

As with a cover of this construction fastened to the boiler, an explosion might occur, I provide the top with a safety-yalve, E, which is balanced to retain as much steam as is safe with tin or other shcet-metals,`and should not, for these metals, permit a pressure of more than one pound to the square inch, and it is advisable to have it 'still less thanthat.amount. The air escapes through this valve when the cover is pressed down, and in order to prevent it from becoming clogged, or its action impaired by the clothes in the boiler, or by lint, I usually place a board over it for protection.

Operation.

In operation, the usual quantity of' water is placed in the boiler, and when ready the clothes are placed in it, and the cover pressed down and fastened.

When the water boils, the texture and weight of the clothes will prevent the steam from' passing readily through the body of the boiler, and will create a pressm'e suicient to force the water through the space or spaces between the sides of the cover and the plates C, as -indicated by the arrows, and cause a thorough circulation of the water, without the intervention of' a diaphragm or horizontal plate at the bottom.

This device will also operate it' the partition-plates C are not brought as near the bottom as shown, but I. prefer to bring them near the bottom.

Havingthus fully described my improvements in wash-boilers,

What I claim as new, and desire to secure by Let ters `Patent, is

The cover B, when provided with one or more partit-ions C and valve E, in combination with boiler A, constructed as herein described, for the purpose speci-v fied. 1

GEO. W. WILSON.

lVitnesses:

E. A. WEs'r, O. W. BOND. 

